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UCC2895-Q1

NOT RECOMMENDED FOR NEW DESIGNS

Automotive 9V to 17V advanced phase-shift BiCMOS PWM controller

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Data sheet
UCC2895-Q1 is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
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Same functionality with different pin-out to the compared device.
UCC28951-Q1 ACTIVE Automotive green phase-shifted full-bridge controller with SR control for wide input voltage range SR control, better light load efficiency, and programmable delays for ZVS

UCC2895-Q1

NOT RECOMMENDED FOR NEW DESIGNS
Order now

Product details

Topology Phase-shifted full bridge Control mode Current Features Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin Duty cycle (max) (%) 100
Topology Phase-shifted full bridge Control mode Current Features Adjustable switching frequency, Current limiting, Error amplifier, Multi-topology, Soft start, Soft switching, Synchronization pin Duty cycle (max) (%) 100
SOIC (DW) 20 131.84 mm² (12.8 mm × 10.3 mm)
  • Qualified for Automotive Applications
  • Programmable Output Turn-On Delay
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak-Current-Mode, or Average-Current-Mode Control
  • Programmable Soft Start/Soft Stop and Chip Disable Via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During Undervoltage Lockout (UVLO)
  • Qualified for Automotive Applications
  • Programmable Output Turn-On Delay
  • Bidirectional Oscillator Synchronization
  • Voltage-Mode, Peak-Current-Mode, or Average-Current-Mode Control
  • Programmable Soft Start/Soft Stop and Chip Disable Via a Single Pin
  • 0% to 100% Duty-Cycle Control
  • 7-MHz Error Amplifier
  • Operation to 1 MHz
  • Typical 5-mA Operating Current at 500 kHz
  • Very Low 150-µA Current During Undervoltage Lockout (UVLO)

The UCC2895-Q1 is a phase-shift pulse-width modulation (PWM) controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant-frequency PWM in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The device can be used either as a voltage-mode or current-mode controller.

Although the UCC2895-Q1 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because it is built using the BCDMOS process, it operates with dramatically less supply current than its bipolar counterparts. The UCC2895-Q1 can operate with a maximum clock frequency of 1 MHz.

The UCC2895-Q1 is a phase-shift pulse-width modulation (PWM) controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. It allows constant-frequency PWM in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The device can be used either as a voltage-mode or current-mode controller.

Although the UCC2895-Q1 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because it is built using the BCDMOS process, it operates with dramatically less supply current than its bipolar counterparts. The UCC2895-Q1 can operate with a maximum clock frequency of 1 MHz.
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Technical documentation

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* Data sheet BiCMOS Advanced Phase-Shift PWM Controller datasheet (Rev. C) Aug 2, 2012

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